Change zero to nan for lack of data

flora-hofmann-frequenz · flora-hofmann-frequenz · commit 75bd4319eb74 · 2024-10-01T13:43:00.000+02:00
Signed-off-by: Flora &lt;flora.hofmann@frequenz.com&gt;
diff --git a/src/frequenz/reporting/_reporting.py b/src/frequenz/reporting/_reporting.py
@@ -114,7 +114,7 @@ async def cumulative_energy(
                 elif last_value_diff < 0:
                     production += last_value_diff
     else:
-        consumption = production = 0.0
+        consumption = production = float("nan")
 
     return CumulativeEnergy(
         start_time=start_time,
